K&F Concept 77MM Neutral Density Filter, 10 Stop ND 1000 Filter HD 18 Layer Super Slim Multi-Coated Glass Neutral Grey ND Lens Filter Nano-X MRC Series for Camera Lens The 77mm ND filter is made of Imported optical glass, top level of transmittance, no colour cast; Aviation aluminum alloy frame,super slim and lightweight, avoiding vignetting on wide angle lenses. Extra tough frame ensuring durability and jamming prevention. ND 1000 filter could reduce the amount of light by 10 stop, long-time exposure edge tool;Multi-coated nano filter, effectively reduce the light refection of the surface, improve image quality. Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint,scratch, protect valued lens. Hard coated multicoating process suppresses ghosting, flare and reflections, and increase light transmission; Can be used to achieve super slow shutter speeds in daylight to render moving subjects invisible ND 1000 Filter Enables slow shutter speeds to be used to record movement in subjects such as waterfalls, providing a silky smooth affect to flowing water.